public class varibleDemo01 {
    public static void main(String[] args) {
        //1.整形变量
        int i = 19999;
        System.out.println(i);
        //2.字符型变量
        char ch = 'a';
        System.out.println(ch);

        char ch2 = '男';
        System.out.println(ch2);

        //3.布尔值变量
        boolean b1 = true;
        System.out.println(b1);
        boolean b2 = false;
        System.out.println(b2);
    }
}
